#!/usr/bin/env bash
set -euo pipefail

export CC=clang

meson setup build --reconfigure
meson compile -v -C build

sector_size=512
partition_offset=2048

dd if=/dev/zero of=build/os.img bs="${sector_size}" count="$((partition_offset + 20480))"
dd if=build/mbr.bin of=build/os.img bs="${sector_size}" count=1 conv=notrunc
dd if=build/bootloader.bin of=build/os.img bs="${sector_size}" seek=1 count="$((partition_offset - 1))" conv=notrunc
mkfs.fat -F 16 --offset "${partition_offset}" build/os.img
mcopy -i build/os.img@@"$((partition_offset * sector_size))" src ::src
mcopy -i build/os.img@@"$((partition_offset * sector_size))" build/kernel.bin ::kernel.bin
mcopy -i build/os.img@@"$((partition_offset * sector_size))" build/terminal ::terminal
mcopy -i build/os.img@@"$((partition_offset * sector_size))" build/echo ::echo